$COW 4H hourly level disk, after touching the 0.9 support area, it rebounded 15% and then went out of the falling structure. If the support level of the 0.9 area is broken, it will continue to test the 0.73 area. The potential decline is 18%. It has now fallen below the daily level rising trend line. The daily line is suppressed by the 20-day moving average, and the 4H is about to close below the moving average group.